| It is a good idea to incorperate the ease of maintenance into a fresh design. The payoff is huge: the life of the pond and better water quality!
Since space is a concern, a dynamic-media bio filter (aka Bio-Reactor of Sweetwater or Nexus of EA) is more compact than the (static) submerged media design biofilter.
As long as the pond has a properly-sized botton drain, any thing else behind this drain can be changed or modified easily. And in the case of CBRS2K one 4-in b. drain (with air dome) would do just fine. MA. Le |